Way too many people talk about Mbappe making the team better, and I agree that they are going to be better there is no doubt about that. But not enough people talk about the fact that what could go wrong as well. I mean think about it, what if Mbappe arrives and the team has issues? After all this team won the league and the UCL without him, so they may feel like he doesn't deserve the attention that he gets and maybe not even pass to him when he could score, and Mbappe could be unhappy with his teammates and try to score himself or just not get along with them.
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What you say could indeed happen, because Mbappe did not play a role in helping Real Madrid become UCL or Laliga champions. So Real Madrid players who have fanatical attitudes definitely have the potential to think like that towards Mbappe. However, I believe that the players that Real Madrid currently have must have a very professional attitude. Because they also receive education at Real Madrid so they don't become fanatics. Because if Real Madrid players have an excessively fanatical attitude, it will certainly have a big impact on the team's overall performance. Because if you have a fanatical attitude then team collaboration will not be good. So you can be sure that the majority of players that Real Madrid currently have are certainly not too fanatical. Because the proof is that this season Real Madrid was able to win the prestigious Champions League title. And Real Madrid certainly achieved this achievement thanks to the unity of players they have. So it is very clear that the Real Madrid players have very good and professional chemistry.
Therefore, it doesn't seem like Mbappe will need long to adapt to Real Madrid. Because as I said above, Real Madrid players are not trained to be selfish and fanatical players. So Mbappe's arrival will actually be a good thing for Real Madrid players. The reason is that Real Madrid players (who are still young) will definitely get positive things from Mbappe, who has quite a long experience in the world of football.